If you have a loose end, just keep pulling that back through the last hole it goes through until you've pulled it back through the last one. Progress seems slow at first, but accelerates all the way through. As far as possible never pull anything hard - that just locks it all together, and stop to try to shake it all a bit looser every now and again.

If you have a loose end, just keep pulling that back through the last hole it goes through until you've pulled it back through the last one. Progress seems slow at first, but accelerates all the way through. As far as possible never pull anything hard - that just locks it all together, and stop to try to shake it all a bit looser every now and again.

If you have a loose end, just keep pulling that back through the last hole it goes through until you've pulled it back through the last one. Progress seems slow at first, but accelerates all the way through. As far as possible never pull anything hard - that just locks it all together, and stop to try to shake it all a bit looser every now and again.

It looks easy to see in the photo, I used macro, the chains are absolutely tiny and I can't tell which is over which with my eyes

I had a similar problem a few weeks ago (though admittedly on a much smaller scale), I suggest:

1. Get a magnifying glass or reading glasses so you can see what you're doing
2. Use sewing needles or pins to hook into and move the chains
3. In this way follow the headphones method others have described